[all-commits] [llvm/llvm-project] 52bbe2: [PAC][CodeGen][ELF][AArch64] Support signed TLSDES...

[Daniil Kovalev via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 52bbe20eb40f45bc64c614b6b3d7fe13bbacb0ff
      https://github.com/llvm/llvm-project/commit/52bbe20eb40f45bc64c614b6b3d7fe13bbacb0ff
  Author: Daniil Kovalev <dkovalev at accesssoftek.com>
  Date:   2024-12-28 (Sat, 28 Dec 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.h
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    A llvm/test/CodeGen/AArch64/ptrauth-arm64-tls-dynamics.ll

  Log Message:
  -----------
  [PAC][CodeGen][ELF][AArch64] Support signed TLSDESC (#113813)

Depends on #120010

`TLSDESC_AUTH_CALLSEQ` pseudo-instruction is introduced which is later expanded
to actual instruction sequence like the following.

```
adrp  x0, :tlsdesc_auth:var
ldr   x16, [x0, #:tlsdesc_auth_lo12:var]
add   x0, x0, #:tlsdesc_auth_lo12:var
blraa x16, x0
(TPIDR_EL0 offset now in x0)
```

Only SelectionDAG ISel is supported.

Tests starting with 'ptrauth-' have corresponding variants w/o this prefix.



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